Yankees placed LHP Andy Pettitte on the 15-day disabled list with a strained trapezius muscle.
Yankees manager Joe Girardi said Andy Pettitte (shoulder) will likely be placed on the disabled list if he needs to miss a start.
The Yankees indicated after Thursday's game that they're not too concerned about Andy Pettitte's tight left trapezius muscle.
Andy Pettitte left Thursday's start against the Mariners with a tight left trapezius muscle.
Andy Pettitte left Thursday's start against the Mariners in the fifth inning with an apparent injury.
Andy Pettitte delivered seven strong innings in Saturday’s victory over the Royals, surrendering just two runs.
Andy Pettitte struggled for the second straight start Sunday, allowing four runs -- three earned -- on four hits and four walks over five frames in a loss to the Athletics.
Andy Pettitte was tagged for seven runs in 4 1/3 innings by the Astros on Monday.
Andy Pettitte allowed three runs over six innings as the Yankees lost to the Rays on Wednesday.
Andy Pettitte yielded three runs in 7 1/3 innings Friday in a 9-4 win over the Blue Jays.
Andy Pettitte (back) threw 40 pitches in a bullpen session Tuesday and expects to start Friday against the Blue Jays.
Andy Pettitte (back) will make his next start Friday against the Orioles.
Andy Pettitte will not make his scheduled start Sunday due to back spasms.
Andy Pettitte allowed one run in seven innings in the Yankees' 14-1 victory over the Indians on Tuesday.